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Hello, I have joined in the hope someone can help me with this mystery!
I have 2 electric liquid-filled radiators in my extension, same brand/style but different dimensions (pics below). Both are heated with a 1200w element (both elements are the same brand as each other) which came with them and recommended by the website which sold them, attached to a plug, plugged into the wall (different sockets) One rad is narrower, taller (236x1780mm), placed against party wall and gets nicely hot. The other is wider, horizontal (635x1180mm), placed under the window, and only heats up directly along the bottom where the element is inserted. The rest of it is lukewarm or still cold to the touch, even when it has been on for a couple of hours on full whack. The elements have in both cases been installed correctly, facing the right way up as recommended by the manufacturer. Both radiators were delivered pre-filled with glycol.
I have bled the cooler radiator in case that was the issue, and that has not resolved it (hardly any air came out). I just don't understand why one heats up well and the other doesn't. I even replaced the element in the cooler rad with a brand new one of the same brand to see if that was the issue, and got the same result. (The taller rad is a beast to get on/off the wall so didn't want to remove it as it is working perfectly).
If anyone can shed any light on this, it would be much appreciated! I measured the BTU requirement for the room before purchasing but the room is never quite warm enough as one radiator is not pulling its weight. I've looked at all the installation guides over and over and have followed them to the letter.
I have 2 electric liquid-filled radiators in my extension, same brand/style but different dimensions (pics below). Both are heated with a 1200w element (both elements are the same brand as each other) which came with them and recommended by the website which sold them, attached to a plug, plugged into the wall (different sockets) One rad is narrower, taller (236x1780mm), placed against party wall and gets nicely hot. The other is wider, horizontal (635x1180mm), placed under the window, and only heats up directly along the bottom where the element is inserted. The rest of it is lukewarm or still cold to the touch, even when it has been on for a couple of hours on full whack. The elements have in both cases been installed correctly, facing the right way up as recommended by the manufacturer. Both radiators were delivered pre-filled with glycol.
I have bled the cooler radiator in case that was the issue, and that has not resolved it (hardly any air came out). I just don't understand why one heats up well and the other doesn't. I even replaced the element in the cooler rad with a brand new one of the same brand to see if that was the issue, and got the same result. (The taller rad is a beast to get on/off the wall so didn't want to remove it as it is working perfectly).
If anyone can shed any light on this, it would be much appreciated! I measured the BTU requirement for the room before purchasing but the room is never quite warm enough as one radiator is not pulling its weight. I've looked at all the installation guides over and over and have followed them to the letter.